Circular sawing machine



(No Model.) 3 sheets-sheet 1'.

C. M HINKLEY. I CIRCULAR SAWVINC MACHINE. V 10.334,663. Paptented Jan.1C, 188C.

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(No Model.) 3 Sheets-Sheet 2.

C. M. HINKLEY.

CIRCULAR SAWINC MACHINE.

No. 334,663'. Patented Jan. 19, 1886.

lvl/venan' mn/asses:

(No Modell.) 3 sheets-sheet s;

G. M. HINKLEY.

CIRCULAR SAWING MACHINE.

No. 334,663. Patented Jan. 19, 1886.

Wnesses lINrTEn STATES PATENT Orrrcn.

GEORGE M. HINKLEY, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE- HALF TOEDWARD P.' ALLIS 85 CO., OF SAME PLACE.

CIRCULAR SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,663, dated January19, 1886.

Application filed July 13, 1885.

To all whom, it may concern.-

Beit known that I, GEORGE M. HINKLEY, of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImprovements in Circular Sawing Machines, of which the following is aspecification.

This invention relates to gang-saw mills; and it consists in variousfeatures hereinafter fully set forth.

In the drawings, Figurel is a side elevation of my improved machine;Fig. 2, a top plan view, partly in section; Fig. 3, a rear sideelevation; Fig. 4, a cross-section on the line of cut; Fig. 5, across-section parallel with the saw-arbor; Figs. 6 and 7, views of oneof the saws.

' My invention consists in a novel construction of the machine, wherebythe mounting and removal of the saws is facilitated and the constructionsimplified and cheapened; in a novel construction of the saws, wherebythey are especially adapted for use in this particular construction',and in means for simultaneously adjusting both the press-rolls, all ashereinafter set forth.

A indicates the bed or frame of the machine, which, as shown in Fig. 3,is rectangular in form and provided with the cross-sill or frame A. Theframe A has at its front and rear sides plumber-blocks B, bolted orotherwise secured to the cross-sill A', as shown in Fig. 2.

The shaft D has a collar, a, shrunk or otherwise firmly secured thereon,which collar is provided with a shoulder, b, Vagainst which the firstsaw is placed. After the rst saw is placed upon the collar a, a ring, C,is placedv thereon. Then another saw is put in position, and this isrepeated until the desired number of saws is secured. A recessed cap, d,is then placed on the end of the saw-arbor D, the opening in the capbeing large enough to receive or encircle collar a, while the exteriordiameter equals that of the collar c. The cap djs provided with anopening to fit the end of the arbor D, and a jam-nut is placed behindthe cap to hold it securely in place.n

`J J indicate uprights, also secured upon Serial No. 171,485. (Nomodel.)

Ythe bed-frame A and @ross-siii A' at both sides of the centralplumber-block, B, the upright J being provided with boxes K for thelower feed-roll shafts, L, while the uprights J have two additionalbearings, Mand N, for shafts O and P. The feed-roll shafts L extendacross the machine from uprights J to J', are provided at their upperends with gears 1, and

are toothed between the boxes or uprights, as shown in Fig. 2, to feedthe material forward. vThese gears l mesh with asmaller gear, 2, on anarm or shaft, P, secured to the upright J', as shown in Fig. 2, the saidshaft P being provided With a larger gear, 3, which receives motion froma gear, 4, on the shaft O. The shafts O are provided with band-wheels Q,to which motion is transmitted by a belt, f, from belt-pulley G on thesaw-shaft D.

The arrangement of the feed-rolls and gearing is duplicated on eachsideof the saw-arbor, as shown.

At the upper ends of the uprights J J and journaled upon a shaft, j,mounted therein, are pivoted or swinging arms or yokes R, each providedwith a press-roll, S, mounted on a shaft, T, carried by adjustable boxesU in the yokes, as shown in Figs. l, 2, and 3.

Attached to each of the yokes R is a long depending curved arm, V,connected by means of connecting-rod or pitman Yto the rockingcross-block W, mounted on the shaft X. One arm Aof the rockingcross-block W extends above and the other below the shaft X, and the armV of one yoke is connected with the upper arm of cross-block W, whilethe other arm V is connected to the lower arm. Connected to the lowerarm of the rocking cross-headv XV by means of pitrnan g is the handleverZ, pivoted to the framing A, as at h, and adapted to be moved over aquadrant, t', as shown in Figs. 1, 2, and 3.

It will be seen that by rocking the lever Z recesses k, to receive alocking dog or pin, Z, carried by the lever Z, as shown in Figs l, 3,and 4.

rIhe pitmen Y, at the point where they are connected to the arms V, areprovided with slots m, so that when the rolls are adjusted and thematerial fed through they are allowed a limited play to compensate forany inequalities in the lumber.

1o In order to guide the material to the saws, I provide the guide-barn, which extends from one side ol' the machine to the other, said guidebeing adjusted in a plane parallel to the saws by screws o, rigidlyattached to i5 the guide, and passing through the upright J where theyare held in place by nuts o', as shown in Figs. 2 and 5.

The rear ends of the shafts O are carried in boxes secured to the rearside of the frame, as

2o shown in Fig. 2.

The plumber-block B at the front side of the machine, supporting thesaw-arbor, is provided with lateral feet q, through which the invertedT-bolts r pass. The frame A, as

shown in Fig. l, is provided with a socket, s,

of T form, into which the bolts 1 t, said socket s extending in a lineparallel with the saw-shaft.

Vhen it is desired to remove the saw, the plumber-block I3 is moved offthe end of the arbor D, the bolts fr sliding in the sockets and guidingthe block in its movement. Then, by removing the nut c and cap d, thesaws can be dismounted without disturbing the remainder 25 of themachine, the saw-arbor being supported at the rear end by plumber-blockB and at its mid-length by block I. After the block B has been replaced,andin order to retain it in position, I provide it with two dependingangular lugs, t, on its under side, provided with set screws or bolts u,which bear upon opposite sides of an opening or depression on the frame,as shown in Fig. l. The lugs tand their bolts a also serve to 'align thebearing C of the block B with the arbor.

lhe saws F, as shown in Figs. 2, 6, and 7, are of peculiarconstruction-that is to say, they are of varying thickness, in orderthat they may cut through the wood without undue heating, and also thatthey may be firmly secured to the arbor.

rIhe saws are provided with the usual eyes, p, and for a short distancearound the eye the sides are made parallel. From this point the sidesdiverge equally, but slightly, until the bases of the teeth are reached,from which point the sides are parallel throughout the length of theteeth. Thus the saw has two parallel faces immediately around the eyeand at the outer edge, these two parallel faces being connected by atapering portion narrowest or thinnest at a short distance from theeyes. By constructing the saws in this manner it will be seen that aclearance is afforded 6 5 for the lumber in its travels through the1nachine, whereby it is pnevented from binding upon the saws andundulyheating them. The periphery or cutting-edge of the saw beingthicker than the other portion thereof, the lumber does not come intocontact with the 7o faces of the saw.

XVhile it is preferred to adopt the peculiar form of saw shown anddescribed, because of the fact that they retain the same form andproportion notwithstanding repeated sharpcning, it is apparent that goodresults may be secured by the use of a gang of circular saws having aregular taper from the eye to the periphery, and hence I do not limit myclaim to the precise form of saw shown and described.

Having thus described my invention, what I claim isl. In asawing-machine, the combination of a main frame, an arbor mountedtherein and provided with one or more saws, a press-roll frame pivotedto a support on the main frame and provided with a rigid depending arm,a rock-shaft journaled in the main frame and provided with a radial arm,a pitman con 9c necting the press-roll arm and the radial arm of therock-shaft, and slotted at one end to slide upon the pitman whichconnects said depending arm, and a lever applied to the rockshaft andserving to rock the same, and thus to move the press-roll.

2. In a sawing-machine, the combination of a main frame, a saw-arborbearing saws and mounted in said frame, a pressroll frame pivoted to asupport above the bed or table of the main frame, bearing a press-rolland provided with a rigid depending arm, a rockshaft mounted in bearingsin the main frame and provided with aradial arm, and a pitman connectingthe arm of the press-roll frame and the radial arm of the rock-shaft,and having a sliding or loose connection with one of said parts, wherebythe press-roll is permitted to automatically adapt itself to slightinequalities in the material passing beneath it.

3. The combination, substantially as described, of a supporting-frame, asaw-arbor and feed-rolls mounted therein, a press-roll carried by aswinging support above the feedrolls, said support being provided with ader i5 pending arm, arock-shaft journaled in the frame, a crossvheadsecured to said rock-shaft, and a pitman having one end slotted toreceive a pin projecting from the depending arm of the pressroll andjournaled at the other end 12o to the cross-head.

4. In a sawing-machine, the combination of frame A, a saw-shaft, D,journaled upon the frame and provided with saws F, feed-rolls L, mountedin uprights J J on the frame, x25 and guide n, having screws o at eachend, passing through the upright J, whereby the guide can be moved toand from the saws, as described.

5. In a sawing-machine, the combination of 13o IOO IIO

a frame, a saw-arbor mounted therein, and substantially asdesoribed,whereby clearancefeed-rolls, a series of oirular saws mountedspace is afforded for the lumber between the upon said arbor and eachhaving a thin ansaws.

nular portion With parallel faces immediately GEORGE M. HINKLEY. 5around their eye, thence increasing in thick- Witnesses:

ness to the bases of the teeth or the gullets, WM. W. ALLIs,

thence of uniform thickness to the periphery, C. H. DE GROAT, J r.

